Answer:
Consequence : Undercutting of the mountain slope by glacial erosion and the retreat of the glacier are the main contributing factors for the rock avalanches, along with thawing permafrost and weaknesses in the bedrock. Landslides falling into glacial lakes may cause tsunamis and river floods and thus pose hazard to people.
What is it? : A glacier retreats when its terminus does not extend as far downvalley as it previously did. Glaciers may retreat when their ice melts or ablates more quickly than snowfall can accumulate and form new glacial ice.
How to they warn us? : They are the most visible evidence of global warming today. In addition to raising sea water levels, widespread loss of glaciers will likely alter climate patterns in other, complex ways. For example, glaciers' white surfaces reflect the sun's rays, helping to keep our current climate mild.
Explanation:
Researched and just know it
